A.immerse the burn in cold water
B.administer aspirin
C.apply petroleum jelly
D.apply a bandage to exclude air
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A.be safe if mixed with fresh water
B.prevent seasickness
C.dehydrate you
D.protect against heat cramps
A.acids or alkalies
B.diesel oil
C.acids，but not alkalies
D.alkalies，but not acids
A.without losing the rhythm of respiration
B.only with the help of two other people
C.by not stopping the respiration for more than 5 minutes
D.at ten-minute intervals
A.directly under the boom
B.moving away from the boom
C.stopped dead in the water
D.tied to the boom
A.hoist man
B.limit switch
C.brake handle
D.preventer bar
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Number 3 lifeboat would be（）.
On a lifeboat equipped with Rottmer-type releasing gear，turning the releasing lever releases（）.
For use as protection from gas leaking from a refrigeration unit，each ship must be equipped with a（）.
Sign(s) of respiratory arrest requiring artificial respiration is(are)（）.
Symptoms of heat stroke are（）.
The most effective first aid treatment for chemical burns is to immediately（）.
Limit switches（）.
The lifeboat releasing gear lever should be marked with the words（）.
Once you have established the daily ration of drinking water in a survival situation，how should you drink it?（）
The grab rail of a metal lifeboat is normally located（）.